Intake lock



\ June 12, 1923.

A. WILLMAN INTAKE LOCK Filed May 8, 1922 Patented June 12, 1223.

ALLIE IVILLIVIAN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR OF ONE-HALF 'ro PETER J. rosette, or NEW HAVEN, CONNECTICUT.

INTAKE LOCK.

' Application filed May 8, 1922. Serial No. 559,315.

To all whom. it may concern:

Be it known that I, ALLIn WILLMAN, a citizen of the United States-residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Intake Locks, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an intake lock and is designed to shut off the supply of explosive mixture to the manifold of a motor vehicle so as to prevent surreptitious use thereof.

It is the principal object of the invention to provide means to effectually prevent the operation of the motor vehicle except by one who is familiar with the lock and knows both its location and operation, and also hasthenecessary means to manipulate the same.

One of the objects of my invention is to provide a locking device whose location is practically unknown, as" well as its presence and the means by which the motor vehicle islocked against use cannot be readily ascertained. v 7

Among other aims and objects of the invention may be recited the provision of a device of the character mentioned, with a view to compactness, in which the number of parts are few, the construction simple, cost of production small and efliciency and operation high.

The improvements in the details and arrangement of parts will be apparent from an inspection of the accompanying drawings, in connect-ion wit-h the description hereinafter contained, and wherein an embodiment of the invention is disclosed for the purpose of imparting an understanding of the same.

In the drawings like characters of reference designate corresponding parts; and

Figure 1 is a side elevation of my improved intake lock, partly in section, and shown in its applied position in relation to the carburetor and manifold respectively;

Figure 2 is a plan view thereof;

Figure 3 is a plan view of the lower section of the. body member with the closure plate shown in connection therewith; and

Figure 4 is a cross sectional view of the improved intake lock and the adjacent parts, taken generally upon line 4-4 of Figure 2.

In the practice of my invention, I provide a body member which is constructed of a lower section and an upper section 11, which in their assembled form are brazed or soldered together so as to form a unitary structure.

The lower section 10 has a recess 12 inits inner face and both sections are provided with openings 13 and 14:, which are of substantially the same size, and opposite each other.

Fixed in the lug 15 on the upper section 11 by the dowel pin 16, or other means, is a key cylinder 17, which is of a usual form and structure, and within which is projected the bit of a key 18 by which it is rotated, as well as the spindle 19 having a pinion 20 on the lower end thereof.

Within the recess 12 is a closure plate 21 having a rack 22 upon one edge thereof, the teeth of which mesh into those of the pinion 20, and by the rotation of which a, reciprocatory movement is imparted to the closure plate. In Figure 3 this closure plate .is shown in its retracted position, but in its forward position it entirely covers the openings l3 and 1e.

My improved intake lock is preferably mounted bet-ween the carburetor 23 of the motor vehicle and the manifold, being so secured by the bolts 23 which pass through openings in said body member and are locked against movement by studs 26.

The ports 27 and 28 in the carburetor and manifold respectively register with the openings 13 and 14 so that the explosive mixture passes directly through the intake look from the carburetor to the manifold when the closure plate 21 is in its open or retracted position but is shut off from passage to the manifold when said closure plate is in its closed or forward position.

As this closure plate is actuated by the key it is a simple matter for the motor vehicle operator to prevent ope-ration thereof by merely closing the port through which the explosive mixture passes to the cylinders by moving the closure plate 21 to its closed or forward position through manipulation of the key. As shown, the lock is operated by a key but other means may be provided for the same purpose.

Minor changes and alterations may be made within my invention, aside from those herein suggested, and I would therefore have r n th in er it understood that I do not limit myselt to the exact construction herein shown and described, but claim all that falls fairly Within the spirit and scope; of, the appended claims.

Having described my, invention, what I claim as new and desire to secure by Letters Patent, is.:

1. In an intake lock forcinternal combustion engines, a pair of superimposed ert'orated registering sections one of which has a continuous recess in its innerface, a slidable closure plate for the perforations havinga rack on one side recess, a pinion in the recess in mesh with the rack, the inner face cit-the other section engaging the plate and pinion to hold both vof th latter in the recess, said sections. being brazed together, a. hollowlug extending upwardly from said other section, a lock barnel in the lug having a key-actuated" spindle connected to the plnlon, and means to secure the sections to the manifold pipe and carbuneten including bolts extending through thg'sections, and connected to they manifold pipe and carbureter I and studs screwed through. the sections and impinged against the. bolts so as to allow of removal of the nuts of the bolts and disconnection-of the manifold pipe without disturbing the remaining parts. 1

2. In an intake lockjtor internal combustion enginesya pair o'fsuperimposed peri orated registering sections one of which has a continuous recess in its inner face, a 010- sure plate forthe pertorations, haying rack on o-nesideedge thereof, slidable in the re cess, a pinion in the recess in mesh with the edge thereof slidable in the face ot the other section en aaging the plate and pinion to, hold both of the latter in the recess, said sections being brazed together, a hollow lug extending upe dly f om sa d th r section, a le k a r in the lug having a key actuated spindle c'onnected to the pinion, and means to secure the 1 sections to the manifold pipe and carbureter.

3. In an intake lock for internalzcornbustion engines, apain of relatively thin superimposed perforated registering sections, a relatively thin I rations disposed between the sections and having a rack on one side edge, a pinion beclosure plate for the pert-o tween the sections meshed with the rack, the Y plate andpinion beingeach completely housedby the sections,a spindle connected at one end to. the pinion and'having its opposite end formed to'receive a key, a lock barrel enclosing the spindle and carried by one section, andmeans to se'curethe sections to and between the inlet manifold-and carbureter.

4. In anintake loclrfor internal combustion engines, a easing'interposed between the ,7

carbureter and intake manifold andheving an opening communicating with each, lockcontrolled'means for controlling the opening arriedfby the casing, boltshjaving nuts, extending through. pantsof the casing, the carbureter and intake man old for securing the. casing in its. said positien, and studs vcarried by the casing and impinged against the bolts whereby; the manifold pipe may! be d sconnected ite thems ng by mm r m ve-1 f th n ts and, ith u clis nrbingth rema m g p t Y c I I r I e tim ny where t, I have-h eunto t fixed my signature.

"ALLIIE WILLMMF- 

